Knob-fastening.



No. '768,952. PATENTED AUG. 80, 1904.

G. W. ROBERTS.

KNOB FASTENING.

APPLICATION FILED DEC. 3. 1903.

NO MODEL.

No.'7es,952.

UNTTED STATES Patented August 30, 1904:.

PATENT Orrion.

GEORGE 1V. ROBERTS, OF LAANNA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TOVINFRED W. NUSS, OF PHILADELPHIA, PENNSYLVANIA.

KNOB-FASTENING- SPECIFICATION forming part of Letters Patent No.768,952, dated August 30, 1904. Application filed December 3, 1903.Serial No. 183,577. (No model.)

To 0/6 whmn it may concern:

Be it known that I, GEORGE 1V. RoBnnrs-a citizen of the United States,residing at Laanna, in the county of Pike, State of Pennsylvania, haveinvented a new and useful Improvement in Knob-Fastenings, of which thefollowing is a specification. 7

My invention relates to knob-fastenings such as are used to attachdoor-knobs to the spindles.

It consists of a novel mode of connecting the knob-shank and thespindles without the use of screws.

It further consists of means for making a knob and shank readilydetachable from a spindle when required, at the same time avoiding thepossibiiity of accidental detachment.

It further consists of novel features of construction, all as will behereinafterfully set forth.

Figure 1 is an elevation of the parts of my device somewhat detachedfrom each other. Fig. 2 is avertical section of the device, showing theparts in their assembled position. Fig. 3 isa section through the linema, Fig. 2, looking toward the left of the drawings.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawings, 1 designates a spindle provided with notchesor ratchet-teeth 2 in one face adjacent its ends. It will be noted thatthe inclined face of each tooth is toward the end of the spindle.

3 designates a knob having a shank 4 and a segment 5, which is cut awayto expose the bore of the shank. At the rear end of the lateral opening5 is a recess 6, the function of which will hereinafter appear. Asegmental portion 7, having an aperture 8, is adapted to fit upon thecut-away portion 5 and complete the'cylindrical portion of the spindle4. A T-' shaped spring-catch 9, having a head 10, a downwardly-extendingtongue 11, and an up waidly-projecting pin 12, provided with a head 13adjacent the tongue 11, is adapted to fit between the walls of the shank4 where the segmental portion 5 has been removed. The head 11 is adaptedto fit into the recessed por- 3. The sleeve 14 is also provided with anaperture 18, the function of which will appear.

As shown, the spindle 1 has a longitudinal slot at its forward endbetween the teeth portion 2. It also has a groove 19 at one side, inwhich engages a lug 20 on the inner side of the spindle 4. It is obviousthat this forms no part of my invention and that the ordinary squarespindle if provided with teeth 2. is adapted to my purpose.

The operation is as follows: The catch 9, the segmental portion 7, andthe sleeve 14 being assembled in proper relation to the knob-shank 4, asshown in Fig. 2, it is obvious that the catch 9 will be held so that itstongue portion 11 projects into the bore of the spindle and that thehead 13 of the pin 12 will project out through the apertures 8 and 18 inthe portion 7 and sleeve 14, respectively. If then the knob 3 and shank4, with these parts connected therewith, be slipped over the spindle,the tongue 11 will engage successively in the teeth 2 as the knob isadvanced. It is also apparent that it will be impossible to withdraw theknob 3 from the spindle 1 unless the finger-nail or some smallinstrument be engaged under the head 13 of the pin 12, whereby thetongue 11 may be lifted out of the path of the teeth 2. It will also beseen that when the rear end of the sleeve 14 abuts against the face ofthe door or a rosette thereon the parts cannot be dislodged ordisunited.

It isevident that this device is applicable to both ends of a spindle orthat one end of the spindle may be secured in the shank of the knob inany Well known or desired manner.

It is further evident that various changes may be made by those skilledin the art which will come within the scope of my invention,

and I do not, therefore, desire to be limited in every instance to theexact construction herein shown and described.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A knob-fastening comprising a spindle having ratchet-teeth, a knoband a shank having a lateral opening exposing its bore, a catch adaptedto engage in said opening and having a tongue projecting into said bore,a

detachable portion adapted to hold said catch.

in position. and a sleeve adapted to engage over said shank and saiddetachable portlon and to bear against the door whereby said catch andsaid detachable portion are retained in place on said shank when saidknob is in its operative position.

2. A knob-fastening comprising a spindle having ratchet-teeth, a knoband a shank having a lateral opening exposing its bore, a spring-catchhaving a tongue adapted to engage with said teeth, a detachable portionadapted to hold said catch in position and a sleeve adapted to surroundsaid shank and said detachable portion, said catch having a headed pinsecured thereto, said detachable portion and said sleeve havingapertures adapted to pass said pin.

3. A knob-fastening comprising a spindle GEORGE \V. ROBERTS. itnessesz7M. (i-Rnw, V FRED W. (JAssIDY, Jr.

